List of the prehistoric life of Ohio

This list of the prehistoric life of Ohio contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Ohio.

Precambrian
The Paleobiology Database records no known occurrences of Precambrian fossils in Ohio.

Selected Paleozoic taxa of Ohio

 * †Achatella
 * †Acidaspis
 * †Acleistoceras – tentative report
 * †Acutichiton – type locality for genus
 * †Adamanterpeton – type locality for genus
 * †Adamanterpeton ohioensis – type locality for species
 * †Aethaspis
 * †Agnesia
 * †Alethopteris
 * †Ambedus – type locality for genus
 * †Amphiscapha
 * †Amplexopora
 * †Annularia
 * †Annularia asteris
 * †Annularia radiata
 * †Annularia sphenophylloides
 * †Annularia stellata
 * †Anthracodromeus
 * †Anthracodromeus longipes – type locality for species
 * Anthracosaurus russeli12DB.jpg †[[Anthracosaurus]]
 * †Aphlebia
 * †Archaeothyris
 * †Arctinurus
 * †Armenoceras
 * †Artisia
 * †Asterotheca
 * †Athyris
 * †Atrypa
 * †Atrypa reticularis
 * †Atrypa reticularus – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Augustoceras
 * †Aulopora
 * †Aulopora microbuccinata
 * †Aviculopecten
 * †Aviculopecten appalachianus – type locality for species
 * †Aviculopecten columbianus – type locality for species
 * †Aviculopecten coxanus
 * †Aviculopecten fasciculatus
 * †Aviculopecten occidentalis
 * †Aviculopecten winchelli
 * †Baldwinonus
 * †Bellerophon
 * †Bellerophon jeffersonensis
 * †Bellerophon spergensis
 * †Bembexia
 * †Bickmorites
 * Brachydectes.jpg †[[Brachydectes]] – type locality for genus
 * †Brachydectes newberryi – type locality for species
 * †Broiliellus
 * †Calamites
 * †Calamites carinatus
 * †Calamites cisti
 * †Calamites suckowi
 * †Calamites suckowii
 * †Calamites undulatus
 * †Callixylon
 * †Camarotoechia
 * Cameroceras trentonese.jpg †[[Cameroceras]]
 * †Catenipora
 * †Centroceras
 * †Ceratocephala
 * †Ceratopsis
 * †Ceraurinus
 * †Ceraurus
 * †Chagrinia
 * †Charactoceras
 * †Chasmatopora
 * †Chasmops
 * †Chaunograptus
 * †Chondrites
 * †Chonetes
 * Cincinnetina meeki (Miller, 1875) slab 3.jpg †[[Cincinnetina]]
 * †Cincinnetina meeki
 * †Cincinnetina multisecta
 * †Cladochonus
 * †Cladoselache
 * †Clarkesvillia
 * †Climacograptus
 * †Coenites
 * †Colosteus
 * †Columnaria
 * †Columnaria calicina
 * †Composita
 * †Composita subtilita
 * †Conchidium
 * †Constellaria
 * †Cordaites
 * †Cordaites principalis – or unidentified comparable form
 * †Cornulites
 * †Cornulites flexuosus
 * Craniella
 * †Crepipora
 * †Ctenacanthus
 * †Ctenerpeton
 * †Ctenospondylus
 * †Cyclonema
 * †Cyclopteris
 * †Cypricardinia
 * †Cypricardinia indenta
 * †Cyrtolites
 * †Cyrtospirifer
 * †Cystodictya
 * †Decadocrinus
 * †Diceratosaurus
 * †Diceratosaurus brevirostris – type locality for species
 * †Dictyonema
 * †Dinichthys
 * †Dinichthys herzeri
 * †Diploceraspis
 * †Diplograptus
 * Discina
 * †Dolichopterus
 * Dunkleosteus (15677042802).jpg †[[Dunkleosteus]]
 * †Ecdyceras
 * †Edmondia
 * †Edon
 * †Eldredgeops
 * †Eldredgeops rana
 * †Elita
 * †Elpe
 * †Elrodoceras
 * †Emmonsia
 * †Endoceras
 * †Erettopterus
 * †Erpetosaurus
 * †Eucalyptocrinites
 * †Euomphalus
 * †Euomphalus planodorsatus
 * Eurypterus Paleoart.jpg †[[Eurypterus]]
 * †Eurypterus ornatus
 * †Eusauropleura – type locality for genus
 * †Faberia
 * †Faberoceras
 * †Favosites
 * †Favosites discoideus
 * †Favosites favosus
 * †Favosites hisingeri
 * †Favosites turbinatus
 * †Fayettoceras
 * †Fenestella
 * †Flexicalymene
 * †Flexicalymene meeki
 * †Foerstia
 * †Fusulina
 * †Gilbertsocrinus
 * †Glyptocrinus
 * RugosaOrdovician.jpg †[[Grewingkia]]
 * †Grewingkia rusticum
 * †Hallopora
 * †Hallopora subnodosa
 * †Halysites
 * †Hamiltonella
 * †Helcionopsis
 * †Heliophyllum
 * †Heliophyllum halli
 * †Helminthochiton
 * †Hexagonaria
 * †Hexameroceras
 * †Hindia
 * †Holopea
 * †Holoptychus – or unidentified comparable form
 * †Hyolithes
 * †Icriodus
 * †Iocrinus
 * †Isodectes
 * †Isonema
 * Isotelus brachycephalus.JPG †[[Isotelus]]
 * †Isotelus maximus
 * †Kindleoceras
 * †Kionoceras
 * †Kockelella
 * †Lambeoceras
 * †Leiosphaeridia
 * †Lepidodendron
 * †Lepidodendron aculeatum
 * Lingula
 * †Liroceras – tentative report
 * †Loxomma
 * †Loxomma lintonensis – type locality for species
 * †Maelonoceras
 * †Manitoulinoceras
 * †Manticoceras
 * †Marsupiocrinus
 * MegalocephalusDB.jpg †[[Megalocephalus]] – type locality for genus
 * †Megalocephalus lineolatus – type locality for species
 * †Megalograptus
 * †Metaxys
 * †Michelinoceras
 * Modiolus
 * †Molgophis – type locality for genus
 * †Mucrospirifer
 * †Mucrospirifer grabaui – or unidentified comparable form
 * †Mucrospirifer mucronatus
 * †Mucrospirifer prolificus
 * †Murchisonia
 * Neritopsidae - Naticopsis.JPG †[[Naticopsis]]
 * †Naticopsis comperta
 * †Naticopsis levis
 * †Neospirifer
 * †Neospirifer cameratus
 * †Neospirifer dunbari
 * †Neuropteris
 * †Neuropteris heterophylla
 * †Neuropteris ovata
 * †Neuropteris scheuchzeri
 * †Nodonema
 * Nucula
 * † Nyassa
 * †Odonterpeton – type locality for genus
 * †Odonterpeton triangulare – type locality for species
 * †Odontopleura
 * †Oestocephalus – type locality for genus
 * †Oestocephalus amphiuminum – type locality for species
 * †Olenoides
 * †Oncoceras
 * Ophiacodon mirus cropped.png †[[Ophiacodon]]
 * †Ophiacodon uniformis – or unidentified comparable form
 * †Orthoceras
 * †Oulodus
 * †Ozarkodina
 * †Ozarkodina confluens
 * †Paraspirifer
 * †Pattersonia
 * †Pecopteris
 * †Pecopteris arborescens
 * †Pecopteris hemitelioides
 * †Pecopteris unita
 * †Pentamerus
 * †Petalodus
 * Phlegethontia.jpg †[[Phlegethontia]] – type locality for genus
 * †Phlegethontia linearis – type locality for species
 * †Phlegethontia longissima – type locality for species
 * †Phragmolites
 * †Phragmolites elegans – type locality for species
 * †Phylloporina
 * Pinna
 * †Plaesiomys
 * †Platyceras
 * †Platyceras bucculentum
 * †Platyceras carinatum
 * †Platyceras rarispinum
 * †Platyrhinops – type locality for genus
 * PlatystrophiaOrdovician.jpg †[[Platystrophia]]
 * †Platystrophia acutilirata
 * †Platystrophia annieana
 * †Platystrophia clarksvillensis
 * †Platystrophia cypha
 * †Platystrophia moritura
 * †Pleurodictyum
 * †Pleuroptyx – type locality for genus
 * †Pleurorthoceras
 * †Poleumita
 * †Polygnathus
 * †Polygnathus eiflius
 * †Polygnathus linguiformis
 * †Polygnathus pseudofoliatus
 * †Polygnathus xylus
 * †Posidonia
 * †Proetus
 * †Protobalanus
 * †Protosalvinia
 * Prototaxites Dawson1888.PNG †[[Prototaxites]]
 * †Pterochiton
 * †Pterotheca
 * †Pterygotus
 * †Ptyonius
 * †Ptyonius marshii – type locality for species
 * †Pugnax
 * †Reteocrinus
 * †Rhizocorallium
 * †Richmondoceras
 * †Rusophycus
 * †Samaropsis
 * †Sauropleura – type locality for genus
 * †Sauropleura pectinata – type locality for species
 * †Sigillaria
 * †Sigillaria brardii
 * †Sigillaria elegans
 * †Similodonta – tentative report
 * Solemya
 * †Solenomorpha
 * †Sowerbyella
 * Sphenophyllum miravallis cropped.jpg †[[Sphenophyllum]]
 * †Sphenophyllum majus
 * †Sphenophyllum oblongifolium
 * †Sphenopteris
 * †Sphenopteris elegans – or unidentified comparable form
 * †Sphenothallus
 * †Spirifer
 * †Spirifer opimus
 * Spirorbis
 * †Spyroceras
 * †Stegops
 * Steth pair1 cropped.jpg †[[Stethacanthus]]
 * †Stethacanthus altonensis
 * †Stigmatella
 * †Strophomena
 * †Strophomena concordensis
 * †Strophomena erratica
 * †Strophomena extenuata
 * †Strophomena neglecta
 * †Strophomena nutans
 * †Strophomena planumbona
 * †Strophomena sulcata
 * †Stylonema
 * †Subulites
 * †Syntomopterus
 * †Syringopora – tentative report
 * †Teichichnus
 * †Tentaculites
 * †Tetradium
 * †Tornoceras
 * †Treptoceras
 * †Triarthrus
 * †Triendoceras – tentative report
 * †Trocholites
 * Tuditanus1DB.jpg †[[Tuditanus]] – type locality for genus
 * †Tuditanus punctulatus – type locality for species
 * †Urasterella
 * †Vinella
 * †Walchia
 * †Westonoceras
 * †Whiteavesia
 * †Wilkingia
 * †Worthenia
 * †Wurmiella
 * †Wurmiella excavata
 * †Xyloiulus
 * †Zittelloceras
 * †Zoophycos

Mesozoic
The Paleobiology Database records no known occurrences of Mesozoic fossils in Ohio.

Cenozoic

 * Acella
 * †Acella haldermani
 * Amnicola
 * †Arctodus
 * †Arctodus simus
 * †Bembidium
 * †Bembidium fragmentum – type locality for species
 * Castor
 * †Castor canadensis
 * Giant-beaver-fieldmuseum.jpg †[[Castoroides]]
 * †Castoroides ohioensis
 * †Cervalces
 * †Cervalces scotti
 * Clethrionomys
 * †Clethrionomys gapperi
 * Equus
 * Erethizon
 * †Erethizon dorsatum
 * Fossaria
 * Gyraulus
 * †Gyraulus deflectus
 * †Gyraulus parvus
 * Helisoma
 * †Helisoma anceps
 * Helophorus
 * †Helophorus rigescens – type locality for species
 * †Hydrochus
 * †Hydrochus amictus – type locality for species
 * Lucina
 * Lymnaea
 * †Mammut
 * Mammut americanum Sergiodlarosa.jpg †[[Mammut americanum]]
 * †Megalonyx
 * †Megalonyx jeffersonii
 * †Meomphix
 * Microtus
 * †Microtus xanthognathus
 * Mictomys
 * †Mictomys borealis
 * Mustela
 * †Mustela americana
 * †Mustela richardsonii
 * Odocoileus
 * White-tailed deer.jpg †[[Odocoileus virginianus]]
 * Ondatra
 * †Ondatra zibethicus
 * Pekania
 * †Pekania pennanti
 * Phenacomys
 * †Phenacomys intermedius
 * Physa
 * †Physa heterostropha – or unidentified comparable form
 * Picea
 * Planorbis
 * Platygonus leptorhinus cropped.png of the genus Platygonus. Charles R. Knight (1922).]] †Platygonus
 * †Platygonus compressus
 * Promenetus
 * †Promenetus exacuous
 * Pterostichus
 * †Pterostichus dormitans – type locality for species
 * Rangifer
 * †Rangifer tarandus
 * Sorex
 * †Sorex cinereus
 * †Sorex hoyi
 * Sphaerium
 * Stagnicola
 * †Stagnicola lanceata
 * Ursus
 * 2010-kodiak-bear-1.jpg †[[Ursus arctos]] – type locality for species
 * Valvata
 * †Valvata tricarinata